2
UCC2941-3/-5/-ADJ
UCC3941-3/-5/-ADJ
ELECTRICAL CHARACTERISTICS: Unless otherwise specified, for UCC3941, TA = 0°C to 70°C; for UCC2941, TA = –40°C
to 85°C; VIN = 1.25V, TA =TJ.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
VIN Section
Minimum Startup Voltage
No External VGD Load, TJ = 25°C, IOUT = 100mA (Note 1)
0.8
1.0
V
Minimum Start Voltage
No External VGD Load, IOUT = 100mA, TJ = 0° C to 85° C
(Note 1)
0.9
1.1
V
Minimum Startup Voltage
No External VGD Load, TJ = –40°C to 0° C
0.9
1.5
V
Minimum Dropout Voltage
No External VGD Load, IOUT = 100mA, VGD = 6.3V
(Note 1)
0.5
V
Input Voltage Range
1
VOUT
+0.5
V
Quiescent Supply Current
(Note 2)
13
25
µA
Supply Current at Shutdown
SD = Open
8
20
µA
Output Section
Quiescent Supply Current
(Note 2)
32
80
µA
Supply Current at Shutdown
SD = Open
6
15
µA
Regulation Voltage (UCC3941-3)
1V < VIN < 3V
3.18
3.25
3.37
V
1V < VIN < 3V, 0mA < IOUT < 150mA (Note 1)
3.17
3.30
3.43
V
Regulation Voltage (UCC3941-5)
1V < VIN < 5V
4.85
5.00
5.15
V
1V < VIN < 5V, 0mA < IOUT 100mA (Note 1)
4.8
5.0
5.2
V
FB Voltage (UCC3941-ADJ)
1V < VIN < 3V
1.212
1.250
1.288
V
VGD Output Section
Quiescent Supply Current
(Note 2)
25
60
µA
Supply Current at Shutdown
SD = Open
8
20
µA
Regulation Voltage
1V < VIN < 3V
7.5
8.7
9.2
V
1V < VIN < 3V, 0mA < IOUT < 10mA (Note 1)
7.4
8.7
9.3
V
Inductor Charging Section (L = 22
µH)
Peak Discontinuous Current
Over Operating Range
0.50
0.85
A
Peak Continuous Current
RPLIM = 6.2Ω, UCC3941-3 and UCC3941-5
0.5
0.8
1.1
A
UCC3941-ADJ
0.6
0.9
1.3
A
ABSOLUTE MAXIMUM RATINGS
VIN Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3V to 10V
SD Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3V to VIN
PLIM Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3V to 10V
VGD Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3V to 15V
SW Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3V to 15V
VOUT Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3V to 10V
Storage Temperature . . . . . . . . . . . . . . . . . . . –65°C to +150°C
Junction Temperature . . . . . . . . . . . . . . . . . . . –55°C to +150°C
Lead Temperature (Soldering, 10 sec.) . . . . . . . . . . . . . +300°C
Currents are positive into, negative out of the specified terminal.
Consult Packaging Section of Databook for thermal limitations
and considerations of packages.
Pin 6 is FB for UCC3941-ADJ.
CONNECTION DIAGRAM
DIL-8, SOIC-8 (Top View)
N or J Package, D Package
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